This here sounds like he may have tried to draw it on the officers, So yes a definite violation of his Constitutional Rights!
"When Morgan saw that police had seen the gun, he tried to pull it out of the suitcase and run away, but it got stuck, so he threw the suitcase at one of the officers and kept running, according to prosecutors."
Maybe he was attempting to do what Will always alludes to as the only acceptable manner of policing thugs with guns:
Hand it over to be vouchered for safekeeping before peaceably turning himself in to face his other charges.